* without it because it is an immutable object in a volatile field. This is desirable so that
   * methods like {@link #state}, {@link #failureCause} and notably {@link #toString} can be run
   * without grabbing the lock.
   *
   * <p>To update this field correctly the lock must be held to guarantee that the state is
   * consistent.
   */
  private volatile StateSnapshot snapshot = new StateSnapshot(NEW);

    /**
     * Atomic counter for tracking the number of accesses made.
     */
    protected AtomicLong accessCount = new AtomicLong(0);

    /**
     * Current status of the crawler.
     */
    protected volatile CrawlerStatus status = CrawlerStatus.INITIALIZING;

    /**
     * Filter for URLs to control which URLs are processed.
     */
    protected UrlFilter urlFilter;

    /**

    private final SmbNamedPipe pipe;
    private final boolean transact;
    private final boolean call;

    private final int openFlags;
    private final int access;
    private volatile boolean open = true;

    private SmbFileHandleImpl handle;
    private SmbPipeOutputStream output;
    private SmbPipeInputStream input;

    private final String uncPath;

    private final CIFSContext ctx;
    private final SmbTreeConnection delegate;
    private SmbTreeImpl tree;
    private volatile boolean treeAcquired;
    private volatile boolean delegateAcquired;

    private SmbTransportInternal exclusiveTransport;
    private boolean nonPooled;

    private final AtomicLong usageCount = new AtomicLong();

    private final ReentrantLock signingLock = new ReentrantLock();
    private byte[] signingKey;
    private final String algorithmName;
    private final java.security.Provider provider;
    private volatile boolean closed = false;

    /**
     * Constructs a SMB2 signing digest with the specified session key and dialect
     *
     * @param sessionKey
     *            the session key for signing
     * @param dialect

 * that can specify different delays for different time periods and days.
 */
public class IntervalControlHelper {

    /** Flag indicating whether the crawler is currently running */
    protected volatile boolean crawlerRunning = true;

    /**
     * Default constructor.
     */
    public IntervalControlHelper() {
        // Default constructor
    }

    protected final AtomicInteger sendCredits;
    protected final AtomicInteger receiveCredits;
    protected final BlockingQueue<RdmaWorkRequest> pendingRequests;
    
    // Connection state
    protected volatile RdmaConnectionState state;
    protected RdmaCredits credits;
    protected int maxFragmentedSize;
    protected int maxReadWriteSize;
    
    public enum RdmaConnectionState {
        DISCONNECTED,

    private final Path stateDirectory;
    private final ScheduledExecutorService scheduler;
    private final CIFSContext context;
    private final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();

    private volatile boolean shutdown = false;

    /**
     * Create a new persistent handle manager
     * @param context the CIFS context
     */
    public PersistentHandleManager(CIFSContext context) {

        private final HandleType type;
        private final long timeout;
        private final long createTime;
        private volatile long lastAccessTime;
        private final Smb2LeaseKey leaseKey;  // Associated lease if any
        private volatile boolean reconnecting;
        private transient SmbFile file;  // Not serialized
        
        public HandleInfo(String path, HandleGuid guid, byte[] fileId, 

        .testAllPublicInstanceMethods(manager);
  }

  private static final class RecordingListener extends ServiceManager.Listener {
    volatile boolean healthyCalled;
    volatile boolean stoppedCalled;
    final Set<Service> failedServices = Sets.newConcurrentHashSet();

    @Override
    public void healthy() {
      healthyCalled = true;
    }

    @Override